‘Federal systems are constantly probed by hackers, but those intrusions are not always successful.’

Thank goodness this is absolutely correct! In nuclear power plants very old IT technology is used that can not be attacked easily. But the detailed description of vulnerabilities found in audit reports will make successful attacks more likely.

Perhaps you remember the film ‘War Games’? Although the Maximum Credible Accident in a nuclear power plant is not comparable to a nuclear world war, the impact on health and environment is catastrophic. Therefore such events must be taken extremely serious.